IS 1293: 2005 for Plugs and Socket-Outlets for Household and Similar Purposes of Rated Voltage up to and Including 250 Volt and Rated Current up to and Including 16 A is under mandatory BIS Certification as per ISI scheme.
The said standard was revised in 2019 and hence updated to new standard as IS 1293: 2019. Since, as of now, both old and new standard IS 1292:2005 & IS 1293:2019 are active. However, post 23rd Oct 2023, IS 1293:2005 will not be active anymore and revised standard of 2019 will be in force post 23rd Oct 2023.
Hence, it is a thumbs up to all the manufacturers to consider using new standard certified plug and sockets only for the import and sale in Indian market.
Here is the official notification which includes variety of plug and sockets are excluded from IS 1293:2019.